Method for providing containers with a controlled environment
US4905454A · kind A · utility
Inventors
Key dates
| Filing date | Apr 21, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Apr 21, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B25/001
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for providing a container with a controlled environment utilizes a first flow method for applying a first source of environment to the interior of the container, a second flow method for applying a second source of environment to the container, and methods for controlling application of the individual sources of environment such that the first and second sources of environment are applied simultaneously for at least some period of time. The method for providing a container with a controlled environment is useful, for example, in food packaging applications whereby oxygen is removed from the food containers and replaced with a substantially inert environment prior to sealing the containers. In a preferred method, a rotary drum-type apparatus is employed for exposing containers in a continuous sequence to the individual sources of controlled environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.